Question

4 Using 1000 J of work, a small object is lifted from the ground floor to the third floor of a tall building in 20.0 seconds. What power was required in this task?
(A)50W
(B)100W
(C)1000W
(D)20W​

Answer 1

Answer:

(B)100W is the right answer ....

Answer 2

Explanation:-

Unit of Work = 1 Joule

So here, Work = 1000 Joule

When we find power its S.I unit is Watt

So, 1 Watt = 1Joule/Second

Now we write Power = 1000J / 20sec

LADIES AND GENTLEMEN

ANS: 50W